Experimental study of the anti-corrosion effect of structural steel AH-36 under cathodic polarization in the tropical marine environment
https://doi.org/10.31615/j.corros.prot.2022.103.1-1
Abstract
The initial result of an experimental study of the anti-corrosion effect of structural steel AH-36 is shown under cathodic polarization in tropical seawater in Vietnam. In the study, various environmental sensors are used to collect data about the environment, in which the calcareous layer is formed with rapid polarization. The completion of layer formation is proved by the stabilization of the output voltage while fixing the output current of the power supply. Under the experimental condition, after the first 100…120 hours, the surface of AH-36 structural steel is completely covered with calcareous layer in the tropical marine environment. An analysis of the properties of the calcareous layer in laboratory conditions using electrochemical methods shows that the effectiveness of protection of AH-36 steel from corrosion after cathodic polarization is achieved in the first week. Maintaining a constant current density further away at a given polarization potential leads to a decrease in the effectiveness of electrochemical protection. We offer directions for studying the calcareous layer for increasing the protective efficiency and their resistance in seawater
About the Authors
Nong Quoc Quang
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Nong Quoc Quang, Research assistant
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
N. L. Philichev
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Nikolay L. Philichev, engineer, Director of the Russian part
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
D. S. Mikurov
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Denis S. Mikurov, Senior Engineer
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
Nguyen Van Chi
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Nguyen Van Chi, Research assistant
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
Dong Van Kien
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Dong Van Kien, Research assistant
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
Le Hong Quan
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Le Hong Quan, Research assistant
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
Cao Nhat Linh
Russian-Vietnamese Tropical Center, Coastal Branch
Viet Nam
Viet Nam
Cao Nhat Linh, Research assistant
30, Nguyen Thien Thuat str., Nha Trang, Khanh Hoa
N. G. Anufriev
Frumkin Institute of Physical Chemistry and Electrochemistry of RAS
Russian Federation
Russian Federation
Nikolay G. Anufriev, Ph.D. in Chemistry, leading researcher
31/4, Leninskiy pr., Moscow
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Review
For citations:
Quang N., Philichev N.L., Mikurov D.S., Chi N., Kien D., Quan L., Linh C., Anufriev N.G. Experimental study of the anti-corrosion effect of structural steel AH-36 under cathodic polarization in the tropical marine environment. Theory and Practice of Corrosion Protection. 2022;27(1):7-16. (In Russ.) https://doi.org/10.31615/j.corros.prot.2022.103.1-1
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